Presentation on theme: "Entrance Ticket 8/22/14 1.) What is matter? Is all matter the same? Explain. 2.) Can you describe some different states of matter? 3.) What do you think."— Presentation transcript:
Entrance Ticket 8/22/14 1.) What is matter? Is all matter the same? Explain. 2.) Can you describe some different states of matter? 3.) What do you think it means when matter undergoes a physical change?
Chpt. 2 Booklets! On the front cover, put your name and period. Title your booklet “Chapter 2: Matter”. Number all the pages, the cover page is page 1. Page 2 of the booklet is for vocab. You will be defining words from today’s activity! Write down all of the vocab. words except solid, liquid and gas.
CH. 2 Vocabulary activity! Your lab table has a bunch of cards that belong in sets of two. For each vocabulary term there is a matching definition. See if you can match them all up correctly. Once your terms match their definitions, you may add the vocabulary into page 2 of your booklets. Do not add solid, liquid and gas (that will go on page 3).
Entrance Ticket 8/25/14 Use the text book to help you! 1.) What is the difference between an element, a compound and a mixture? 2.) What is the difference between matter that is homogenous and heterogeneous? 3.) Please compare some physical and chemical of properties matter. H.W. read 2.2, do #11,12, 14-16 on pg. 47
Chpt. 2 Booklets! Page 3 is for you to define and draw what solids, liquids and gases look like at the molecular level. Title pg. 3 “States of Matter”. Use pg. 41 in your texts to help.
Booklet Catch Up -Booklet page 2 needs to have the 8 vocabulary terms from Friday on it. -Booklet page 3 needs to have the three states of matter drawn on it. (draw what they look like at the molecular level, use pg. 41 in your text)
Activity -Each lab table will have 2 groups today. Partner up with one or two people and complete the practice worksheet to the best of your ability. Work together, and compare answers with the other group at your table. -Make sure your names are at the top of your paper!
Answers Front 1.O,E 11. E 20. M 29. P 38. P 2.O12. C 21. P 30. P 39. C 3.O13. M 22. P 31. P 40. C 4.E14. C 23. C 32. P 5.O15. M 24. C 33. C 6.O,E16. M 25. P 34. P 7.E17. C 26. C 35. P 8.O18. E 27. P 36. C 9.O 19. C 28. P 37.P 10. O
Answers Back 1.B 11. B 2.C12. D 3.D13. D 4.D14. D 5.A15. D 6.B 7.B 8.E 9.E 10.D
Separating a Mixture: Physical Changes Lab Discuss with your neighbors: How can you separate a mixture of sand and salt? If I were to give you a mystery mixture of sand and salt, could you find out the ratio of sand to salt? *Please take out your lab manuals & look at the lab on page 3!
Make sure to… - weigh your beaker & filter paper before using them! -Put your names on the filter paper -some of the sand will stick to the beaker, just do the best you can to get it out -clean out both beakers when you are done with the lab -sand will not be weighed until tomorrow
Percentages A percentage is the same as a fraction. To find a percentage you need to take a part and divide by a whole, then multiply by 100 to change the decimal to a %. So…to find the % of your mixture that is sand, what are you going to do?
Sand/Salt Mixture THE ACTUAL PERCENTAGE BY MASS OF THE MIXTURE IS…….. 77% Sand 23% Salt
Booklet page 4 On page 4 of your CH 2 booklets, write a paragraph describing what you have learned about classifying matter. Remember… Topic Sentence Concrete detail Concrete detail (or commentary if you want) Concrete detail Concluding sentence *Homework: read 2.3 do problems 20-26 in pg. 5 of your Chpt. 2 booklets!!
Booklet Catch Up -Booklet page 2 needs to have 11 vocabulary terms defined. -Booklet page 3 needs to have the three states of matter drawn. (draw what they look like at the molecular level, use pg. 41 in your text to help) -Page 4 is your matter paragraph. - Page 5 is for tonight’s homework problems.
Entrance Ticket 8/29/14 The simplest form of ____________ that has a unique set of __________________ is called an ________________. What is a compound? Describe the difference between chemical change and physical change. Give an example of each.
Matter & Change Physical and chemical changes both involve matter changing form. However, when matter changes chemically, the actual composition of matter changes into a new substance or substances. In physical change, matter keeps its chemical composition as it changes form.
Concept Map -Your lab table has a set of terms, please cut them out and make a concept map. Use the string to connect the terms in the most logical way. -When approved, add this map to page 6 in your booklets.
Investigation -Booklet page 8 If I were to give you a piece of steel wool (scouring pad) and let you burn it, hypothesize what would happen to its mass? steel wool
Booklet page 8 Steel wool investigation Hypothesis: ______________________________ Data & Observations Mass before heating (initial): ___________ Mass after heating (final): ____________ Color & texture before heating: Color & texture after heating: - you only need to burn for 1 to 2 minutes
Investigation Steel wool is actually not steel! Steel wool is actually…… Fe Iron
Chemical Reactions Fe + O 2 FeO Iron Oxygen Iron (II) Oxide reactants products What’s wrong with this reaction???
Entrance Ticket 9/3/14 Do not write this! With the people sitting around you, discuss what happened in yesterday’s investigation with steel wool. In order to go to the lab tomorrow, both pg. 5 & 7 in your booklet must be complete! H.W.: Read Chapter 2.4, do problems 28- 33 in pg. 7 of your booklet.
Chemical Reactions Mg + O 2 MgO Magnesium Oxygen Magnesium Oxide reactants products What’s wrong with this reaction???
Chemical Reactions Balancing Remember: the # of each atom needs to match on both sides of the arrow 2Mg + O 2 2MgO
Entrance Ticket 9/4/14 Booklet page 7 will be checked tomorrow. What are four ways you can tell that matter has gone through a chemical change? Get out labs, tear out pages 7-9
Entrance Ticket 9/4/14 Evidence of chemical change: -energy transfer (light, heat, fire, cold etc.) -color change -formation of a gas (bubbling) -formation of a precipitate (cloudiness, murkiness, grainy or clumpy)
Chemical Reactions lab Be careful!!! -Do not let the tips of the pipettes touch the other solutions!! -Make sure to put the chemicals back in the right spot! -Wash off the plastic sheet THOUROUGHLY when finished
Entrance Ticket 9/5/14 Do not write What have you learned about matter and change? Share 10 concepts with a neighbor. *Study for the Chapter 2 test!
Chemical Reactions Methane Bubbles Methane Bubbles CH 4 + O 2 CO 2 + H 2 O CH 4 + O 2 CO 2 + H 2 O CH 4 + O 2 CO 2 + H 2 O CH 4 + 2O 2 CO 2 + 2H 2 O